This model must be simulated for 20000 s to obtain the required steady state. The actual transient can then be simulated by importing the final steady state, setting the controller gains to zero, and setting the appropriate values to the signal generators height parameters:
importInitial()
ValveOpening.steadyStateGain=0.0
wfeed.steadyStateGain=0.0
Qev.startTime={63};
Qev.height={-11.4e3};
Qev.duration={7};
wfeed1.startTime={63};
wfeed1.height={0.0017};
wfeed1.duration={16};
wfeed2.startTime={80};
wfeed2.height={0.0009};
wfeed2.duration={540};
The whole simulation sequence can be obtained by running the 120501_2s.mos Dymola script.